Apparatus for marking pipes



Dflt. 18, 1 928.

- w. D MOORE ET AL .A'PPARATus-f'oR MKRKING PIPES Filed June 1926 3 Sheets-Sheet VENTORS J Ml/mmgfil/Wqre M5206 army ATTORNEY Dec. 18, 1928.

Y W. D. MOORE ET AL APPARATUS FOR MARKING PIPES Filed June s, 1926 INVENTORS WILLEAEVL n. moans, Jesse BQLon Q' Nn WILLIAM ;ecn/vnlas,or ia zmagrneimn,

W1, A conzonerulon on-nnnAWARE v mechanism "for imprinting "on :Casfit articlesdesigns inth'e form of letters and the lrkeyan'cl more particularly in mechanism fejr im- 4 print/inn designs such as trade-ma-rks on the bell en'cs of cent-rilugally cast;pipe"of' the k v y i i surfaceof the corewhich definestheiendof bell and spigot type. V V

'A convenient locationfor the design-is-on the end o'f-the-Wallof th-ebell or socket. "This surface faces axially or: substantiallyso, and a design placed thereon is'visihle, even when the pipesare stacked. H Pipes ofthe character "in. question are cast in rotary molds, ancla head core ind-epen dent of the mold is'util'ize d in' the' formation off-the. bell or socket "end. he core, usually com posed of oil antlsandflnolded to shape-has at one end a marginal annular rib, the'inn erfl ace of which provides a convenient locationcfor the matrix of the design; y i.

Pipes of the character in gues'tionare some? times cast in tiltable mol thepouringon'at I least a portion thereof taking ,place While the mold isincline d Withthe bell end down Ward. Vfhile usually thenioldiis'so manipr lated-during'the pouring as attainuniform longitudinal distribution of the molten metal nvithout' any excess Vat theihead core end,

sometimeslisppenszthat a part oft-hemolten metallm ay strike the "face of the head core, here cooling rmicklylitisaetained.

7 During. the 101'; gitu'dinal distribution of the molten metal the moldis usually rotated. slowly,- at speed insuificient to holdthe metal on the molclwdlL Circumferential distribution is attained by an abrupt andirapid 'increase'in the speed of rotation, an'clfthistakes place? density.

at or near the end of'tlieleveling operation.

Should any ofthe molten metal adhereg-toj the face of the head core during'theslowvror tatiomit will bethrown o'ff fduring the rapiidf rotation and onto the inner sllrfaceot it-he? casting); Wall. Such .metal'does not wholly;

merge into the metal-of the walhfbut re n-a as'an ex'cresence which later mustbe ground away.

Foi'itliis reason the head cores areusually deeply recessed, az'rially on' th einnerface or, end, that any excess of metalwillenter't "s recess and will beretained therein dui no; t c' rapid rotation of the pipe -andmold. Tl

side Wallof the recess is shaped toresistth'fe ment of the oastingwall.

Elk-BIA; ,essmnons m0 SAND Q PJU'N EATTFEISTISYCQRQPQRAQIQN, .or nnw MAJIRKING ruins.

1926. Serial No.113,4 11.

radial urge of the centrifugal actionzonithe v retained :metal," thus to: prevent? any impair- Thecores are formedji in mold boxes on a crrcular headplate by' means of which the headeore may be connected to the flask; The

v the 'flange, and since the meld box conforms closely to the external contour oft-he headcore,- itwill beevident that axial movement'of the mold and head core, which noyement obviously best to separate m-old and core without impairment of the desi possible." V

inventioniisthe provision of acorebox or mold of a character suchlthat-cor'es nayfbe madeeach with a: clear,- nctancl clean-cut" matrix of'thed-esign withouhinaterial deviation from the usual niethoclof 'formingtthe cores. 1

eAnot-her obj'ect iis"the provision of'n core boX' or mold of a character suchlthat' thebox may be easily and quickly removed. from Lt-he core ongthe head. platewi thoutimpairment or marring of'tlie'clesign' Another object isth provision 02:": 'aiboX. so formed'as' tofacilitate thefiorlnation of .adesign carrying flange or rib' or uniform Another 'objectis'the proyision pf mecha that the formation 'ofr'thc, recess.will assistin obtaining; a clear impressionlof'the design.

YVith these and other objectsin View the invention; consists "in the construction and novel; combination of parts fully "described I hereinafter, llustrated in they accompanying drawings, andpointedoutin the claims appendedjhercto, 1t be ng understoo l at vanous cln es nthe'fornnproporti size an minor detailsof machine construction Wi the/scope of;the claims, may be resorted to Oneof the primary objectscfthe ppesent nism in connection With thec n'iold'box ifor" forming theamfal recess'in amannerisuch the yoke shaped member and the mold without departing from the spirit of the invention.

In the drawings forming a part hereof:

' Fig. 1 is a vertical section through the improved mechanism.

Fig. 2 is a section on the line 22' of Fig. 1.

Fig. 3 is a view similar to Fig. 1 with the stop plate in inoperative position.

Fig. 4 is perspective view of the com.- pleted head core looking from the inner end or face.

Fig. 5 is a plan view of an struction. r

Fig. 6 is a vertical section of thesame.

1n the present embodiment of the inven tion a suitable supporting frame is provided,

alternate conincluding a pair of laterally spaced vertically arranged rods or standard 1, connected at their, tops by a cross-plate 2. This plate has openings at its ends which receive reduced threaded stems 4 on the rods, and it is secured in place by means of nuts 5. Y

A cross-head 3 has guided vertical movement on the standard 1, and the headcarrics.

at its centeran elevated substantially circular table 6, which forms the bottom of the mold box to be described, and carries the core plate of the head core, by means of which the head core is secured to the flask.

The cross head 3 IS the upper end of aplungerv 7, mounted in a suitable cylinder not shown, in which the plunger is moved by means of fluid under pressure, as for instance water, the flow of the fluid being controlled.

in any usual manner. The upper face of the tableis annularly rabbeted at its periphery as shown at 8, to provide a central boss 9, which fits within the recess 10 on the adjacent face of the core plate 11, the said recess being central to the core plate.

The core plate forms the bottom of the mold, and the side walls and top are constituted by similar sections'12 and 13. Each of these sections, which are of substantially semi-cylindrical form, has a pair of hinged ears 14 and 15 respectively at its top, the corresponding ears or thepairs lapping upon each other. Each pairvo'l lapping ears is en gaged by a pintle pin 16, supported by one of the arms 17 or 18 as the case may be of a substantially yoke shaped member, the body of which is a bearing 19; I

. The bearing 19 engages the reduced upper end 20 of'a hinge post 21 supported by the crosshead, and the body rests upon a cam sleeve 22 rotatable on the post and provided with a handle 2'. a for convenience in manipulating the same. A complementary cam sleeve 23 is secured on the post ust below tl e sleeve 22, and the abutting ends oi thesleeves are so sh aged that relative rotative movement of the sleeves in one direction will move them away from each. other The arrangement is such that when the handle ismoved for instance of an inch. 7 The mold sections 12 and 13 are clamped together to complete with the core plate the formation of the mold, by clamps 2alpivoted to thetable as indicated at 25 with'a lost motion connection. The connection is such that the table may move slightly vertically with respect to the sections without disturbing the position of the clamps with respect thereto. The sections 12 and 13 have marginal vertical ribs which abut when the sections are closed,

and the clamps are U-shaped to engage the abutting ribs atjeach side of the mold. Thus the sections are clamped together, and a limited movement of the table with respect to the mold sections, for a purpose to be pres enly described, is permitted.

A. stop plate 26 is hinged to one of the rods 1, between a pair of holding collars27 on therod, and this plate adapted to be swung into and out of position over the mold boX. When in position over the box, the stop plate engagesthe upper ends of the mold sections to prevent upward movement thereof during the lifting of the table.- When the-stop plate i, swung away from over the mold, it permits access to the mold cavity, andenables the operation of the recess forming plug, to be described. i

The plug 28 is carriedby the cross plat-e2, depending from the center thereof between the standards orrods 1. The plug is shaped to form a recess of the desired shape and capacity, and it is moved into the mold by relative movement of the plate 2 and the table, the table in the present instance being the movable element.

Referring to Figures 1 and 4 it will be seen that the improved core includes a body 29 having at one end a marginal annular flange 30, and at the other; an axial recess 31 of rela tively great depth. The design indicated at 32 is formed on the annular axially facing surface 33 between the circular side wall ot' the'body andthe circular side wall of the flange. The head core is as before stated supported in the flask at the bell end thereof, and assists in the formation/of the bell end of the casting. a

The shoulder or ledge33tt it will be impressed on the casting on the face of the bell. The characters forming the pat tern and indicated at are raised on the mold sections 12 and 13 at the lower ends thereof, and it will be noticed referring to Figure 1 that thesaid sections havean in ternal groove 35 just above this point, which provides for the annular rib 36 on the head core. Obviously it would be impossible to separate mold and head core by axial move ment on account otthe rib and groove 35-36 in head core and mold wall respectively.

llt

.orms the end of '7 the bell, and with the design on this'surface,

Hill

Qnly such movement would enable separation or mat-r12: and design to impression.

The operation is as follows With the'parts in the position of Figures 1 and 2, but with the stop plate 26swung aside as in the position oiFigure 3,'a suitable molding material, as for instance sand and oil is packed into the mold through the opening at the top. It will be noticed referring't'o Figure 1' that the head plate has an annular rib 37 on its upper face which abuts the inner surface of cavity wall of themold' sections12 and 18 This ar- .rangement permits relative-movement of mold sections and head plate without leaving an opening between them..

After the moldlng material has" been packed as above described, the stop plat'ei's swung intoposition above the mold, and the table 6 is lifted slightly, usually about of an inch. 7 This movement compresses the molding material closely intothe pattern; The stop plateis now swung outwardly into the position of Figure 3, and the table isilifted ing of the molding material into all parts o J the mold cavity.

. The table is now lowered, the catches 24. re- I leased, and by means of the cam 22 the parts are loosened, the mold sections being moved slightly with respect to the head plate. The

mold sections maynow be swung outwardly and upwardly. away from the head core. This combmation of outward and upward movement'withdraws theraised characters on i the mold sections from the matrix on the said core without impairing'the same, and'wlthout impairment of the sharply cut lines of t is same.- The entire mold top includingthe sections 12 and13 and the yoke shaped member may be swung awa'y from over thehead plate giving free access thereto. Cores of various size and for pipes of difierentclasses may be made on the same measurements, merely by changing the box'sectlons.

In the alternate construction shown in Figures 5 and 6, a base plate 40 is provided The core plate 44 similar to that shown in Figures 1 to 4rests upon the core plate. support, the said support having a central boss 45 engaging a central recess 46 in the bottom of the core plate. The mold body sections 47 similar to those shown in Fig. are hinged to the standards 41, on pivot p1ns'48 which leave a 'clear'cut hinge the section to swing outw' lard-ly' and upwardly-away from each other and from the core plate and the core thereon. The body mold sections have the abutting flanges 4 9, and each pair is engaged by the arms of a yoke-shaped clamp 50 pivoted at 51 to the standards 41., to's'wing into and' 'eut of clamping position. When the clampsare in the position of Fig. 6, the arinso'f the forks engage the abutting ribs, locking the body mold sections together. g he recess forming plug 52 is provided with anysuitable means .ior' manipulating the same, as for instance a handle53, and-the mold is adapted to rest upon a table, bench or the like when in use. The mold may be supported upon a movable plunger if de sired in the same manner as in the Fig. 1

construction, and the plug may occupy a'iix ed position above the same. The alternate con struction is more particularly adapted to hand ramming, and theoperation is as fol lows b With the mold body sections in proper position above the coreplatejsuppor-t, and clamped together, and wit i the corepl'ate on the support, the sand properly prepared is introduced through the top of the mold and packed into place," it being understood that the body mold sections are provided with the design pattern to reproduce the desi matrix on the'rib 54 of the core has been properly packed, the plug is used from the recess, and the pressure due to the entrance of the plug into the moldcompletes the closepacking of the sand I I The plugis'then removed, theclamps are released, and. the body mold sections are swung outwardly and --upwardly away from each other. The c'ore'plate support with the iterthe mold core late andcore is swung utwardl from i beneath the body, mold sections, and toone -side,'where the core is easily accessible for removal. Any sultable means may bepro-' vided for holding the body mold sections in open position, as for instance any usual and well-known form oli'latch.

I If desired, the sand which forms thecore may be blown into the mold. In order to enable this action, the recess forming plug is made hollow as shown in the plug 52 in Figures 5 and 6, and ope'ningsor blow holes lead from the hollowto the exterior. These openings are spaced over the entire area of the lug. f t I Y It will be apparent from the drawing Vane the description, that the improved mold ineludes a body and a bottom, the body reamedor counterbored at the end adjacent to the bottom to provide an annular shoulder fac ing the body and spaced apart therefrom when the parts are in molding position. The shoulder and the body cooperate in the mold.- in operation to form the annularezrzternal flange at the end of the core.

What is claimed is: I V i 1. A mold for head cores for the bell ends of cast pipes of the bell and spigot type, in cluding a hollow mold contoured to form at one end of the head core an annular marginal rib with a selected design on the face adjacent tothe core, the mold sectional, the sections relatively movable, means to impart relative movement to the sections to compress the rib, and independent means to move the sections apart to partially release the matrix from the design.

2. A mold for head cores for the bell ends of cast pipes, provided with a design to form a matrix in the head core for reproducing the design at the end of the bell, the mold including a bottom, and a body composed of similar sections hinged together at the end remote from the bottom to swing outwardly therefrom, and means for locking the sections together supported the bottom and having a lost motion connection therewith.

3. A mold for head cores for the bell ends of cast pipes, including mold contoured to form at one end of the mold an annular rib with a selected design on the face adjacent to the core, the mold sectional and open at the top, and a recess forming pl shaped to move into the opening to form an Xial recess in the core.

4:- A mold for head cores for the bell ends of cast pipes, including a bottom to define one end of the core, and a body to define the side wall and opposite end, said body enlarged internallyat the end adjacent to the bottom to provide at the end of the core an annular rib for defining the end of the bell, the enlargement providing a shoulder at the inner end thereof facing the bottom, and having thereon a design to be reproduced as a ma-' trix in the head core, the body composed of similar sections hinged together the end remote from the bottom to swing outwardly and upwardly from the bottom. v

5. A mold for head cores for the bell ends of cast pipes, including a bottom to define one end of the core, and a body to define the side Wall and opposite end, said body enlarged internally at the end adjacent to the bottom to provide at the end of the core an annular rib for defining the end of the bell, the enlargement providing a shoulder at the inner end thereof facing the l')Ol t )11'l, and having thereon a design to be reproduced as a matrix in the head core, the body composed of similar sections hinged together at the end remote from the bottom to swing outwardly and upwardly from the bottom, the bottom and body mounted for relative axial movement.

6. A mold for head cores for the bell ends of cast pipes, including a bottom to define one end of the core, and a body to define the side wall and opposite end, said body larged internally at the end adjacent to the of cast pipes, including a bottom to define one end of the core, and a body to def ne the side wall and opposite end, said body enlarged internally at the end adjacent to the bottom to provide at the end of the core an annular rib for defining the end of the bell, the enlargement providing a shoulder at the inner end thereof facing the bottom, and having thereon a design to be reproducedas' a matrix in the head core, supports'for the bottom and body having relative axial movement, the body support mounted to swing out of alinement with the bottom, the body composed of similar sections'hinged to the support, and means to lock the body sections together;

8. A mold for head cores for the bell ends of east pipes, including a bottom to define. one

end of the core, and a body to define the side wall and opposite end, said body enlarged internally at the end adjacent to the bottom to provide at the end of the core an annular rib for defining the end of the bell, the enlargement providing a shoulder at the inner end thereof facing thebotto'm, and having thereon a design to be reproduced as amatrix in the head core, the body composed of similar sections hinged together at the end re mote from the bottom to swing outwardly and upwardly from the bottom, the body having a central opening at the end remote from the bottom, a stop plate mounted to swing over the opening, the bottom and body mounted for relative axial movement with respect to each other and with respect to the stop plate. I

9. A mold for head cores for the bellends of cast pipes, including a bottom to define one end of the core, and a body to define the side wall and opposite end, said body enlarged in:

ternally at the end adjacent to the bottom to A provide at the end of the core an annular rib for defining the end of the bell, the enlargement providing. a shoulder at the inner end thereof facing the bottom, and having there-. on a design to be reproduced as a matrix in the head core, the body composed of similar sections hinged together at the end remote from the bottom to swing outwardly land upwardly from the bottom, the body having a central openmg at. the end remote from the bottom, and a recess formmg plug of a size to pass through the central opening, the bottom and body having relative axial movement with respect to each other and with respect to the lug.

10. A mold for head cores for the bell ends of cast pipes, including a bottom to define one end of the core, and a body to define the side wall and the opposite end, said body reamed or counterbored at the end adjacent to the bottom to provide an annular shoulder facing thebottom and spaced apart therefrom, said shoulder and bottom cooperating in the molding operation in the formationof an annular external flange at the end of the core.

11.. A mold for head cores for the bell ends of cast pipes, including a bottom to define one end of the core, and a body to define the side Wall and the opposite end, said body reamed or counter-bored at the end adjacent tothe bottom to provide an annular shoulder fat g the bottom and spaced apart therefrom, said shoulder'and bot-tom cooperating in the molding operation in the formation of an annular external flange at the end of the core, and means in connection With the shoulder to form a design matrix on the adjacent face of the flange.

\ 12. A mold for head cores for the bell ends of cast pipes, including a bottom to define one end of the core, and a body to define the side Wall and the opposite end, said body reamed or counterbored at'the end adjacent to the bottomto provide an annular shoulder fac- 'ing the bottom and spaced apart therefrom, said shoulder and bottom cooperatmg 1n the molding operation in the formation of an annular external flange at the end of the core, and means in connection With the shoul- I at the said end of the mold, the mold having means to form a matrix on that face of the flange remote from the closed end.

Signed at Birmingham, in the county of Jefferson, and State of Alabama, this 12th WILLIAM B. MOORE, JOSEPH B, LGRING. WILLIAM J. BOWERS.

day of May, A. 

